The Decameron is a collection of 100 novellas by Italian author Giovanni Boccaccio, probably begun in 1350 and finished in 1353. It is a medieval allegorical work best known for its bawdy tales of love, appearing in all its possibilities from the erotic to the tragic. Many notable writers such as Shakespeare and Chaucer are said to have borrowed from The Decameron.

Decameron is structured in a frame narrative, or frame tale. Boccaccio begins with a description of the Black Death and leads a group of seven women and three men who flee from plague-ridden Florence to a villa in the (then) countryside of Fiesole for two weeks. To pass the time, each member of the party tells one story for each one of the nights spent at the villa. Although fourteen days pass, two days each week are set aside: one day for chores and one holy day during which no work is done. In this manner, 100 stories are told by the end of the ten days.

Each of the ten characters is charged as King or Queen of the company for one of the ten days in turn. This charge extends to choosing the theme of the stories for that day, and all but two days have topics assigned: examples of the power of fortune; examples of the power of human will; love tales that end tragically; love tales that end happily; clever replies that save the speaker; tricks that women play on men; tricks that people play on each other in general; examples of virtue. Only Dioneo, who usually tells the tenth tale each day, has the right to tell a tale on any topic he wishes, due to his wit. Each day also includes a short introduction and conclusion to continue the frame of the tales by describing other daily activities besides story-telling. These frame tale interludes frequently include transcriptions of Italian folk songs. The interactions among tales in a day, or across days, as Boccaccio spins variations and reversals of previous material, forms a whole and not just a collection of stories. The title is a combination of two Greek words meaning "ten" (δέκα déka) and "day" (ἡμέρα hēméra).

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